That's it.
There's no 'artwork', really - it's just clear bottom with a green line and yellow top. In the yellow top it says 'Collect Next Spiral value w/ Lit'. The plastic is, oddly, still available - just without the text for some reason. (Reference Marco's complete plastic set.)
(I'm guessing - meaning, I have NO FACTS to back this up - that at some point someone re-made the TZ plastics set, and saw this plastic and re-made it, without knowing what it was or what text was supposed to be on it. My OEM Plastics set does NOT HAVE that plastic. So the original OEM plastics sets did NOT ship with it.)
If you have them remade, I'd be in for one as well. I lost my original many many many years ago.